“I think [his signing] was a great message from the club,” said the Spaniard, “Because everyone was expecting a top, top striker rather than a No 10.

“But at the end we got an amazing player and he has lifted everyone.

“Not only us, but also the crowd at the Emirates - I think you can see the people are excited again to come and watch us, and he makes a big difference.

“We’re delighted to have him.”

As well as his world-class first goal on Tuesday, Ozil teed up the second for Olivier Giroud.

The Germany midfielder’s 15 Champions League assists since August 2010 for Real Madrid and now Arsenal are more than any other player in the competition.

Arteta added: “It gives you a step forward, quality-wise. Also someone else on the pitch that can decide the game by himself.

“When you have a player that is capable to finish the way he finished, it makes the difference. When its about winning those games or losing, he makes a big difference.”

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With their heads still spinning, Rafa Benitez’s Napoli stars admitted to having no answer to a Champions League display in which the Gunners' players looked as though they were coming from everywhere.

Much-vaunted midfielder Marek Hamsik said: “Arsenal were devastating early on and we were very bad. They scored twice and gained in confidence.”

Team-mate Gokhan Inler added: “Their movement is really impressive. They seemed to be everywhere at once. Arsenal play good football. We tried in the second half and improved, but clearly it’s very difficult to play against Arsenal.”

Now, Wenger's men sit on top of both their Champions League group and the Premier League table, with a trip to West Brom - surprise winners over Manchester United at Old Trafford last weekend - to come on Sunday.

But can they keep it up?

Since losing at home to Aston Villa on the opening day of the season, Arsenal have won nine of their last 10 matches.

Last Saturday’s win at Swansea extended the club record of consecutive away wins in all competitions to 12 and equalled their record of eight in the Premier League, set in the 2001-02 title-winning campaign.

Besides Ozil’s titanic displays, Aaron Ramsey has been in incredible form, with eight goals in his last 10 appearances, and striker Olivier Giroud has six from his 10 games so far.

Yet a feeling persists that injuries to those three players could blow a hole in the club’s ambitions.

Arteta, however, believes that with so much quality waiting in the wings Arsenal do have what it takes to end their trophy drought.

He went on: “We are still in the very early stages, we haven’t really done anything yet!

“But at least we are looking very good, looking very solid, we are winning the games and we have got a gap with some of the teams now where in the last few years it has been the opposite. So that is very positive.”

Wenger still has the likes of Jack Wilshere, Lukasz Podolski, Alex Oxlade-Chamberlain, Abou Diaby, Theo Walcott, Santi Cazorla and Thomas Vermaelen to return, push for first team places - and answer suggestions that the squad lacks the depth for a title challenge.